Stark gained historical notoriety due to her husband's battle call of "There are your enemies, the Red Coats and the Tories. They are ours, or this night Molly Stark sleeps a widow!" before engaging with the British and Hessian army in the Battle of Bennington. Stark is also known for her success as a nurse to her husband's troops during a smallpox epidemic and for opening their home as a hospital during the war.

Numerous revolutionary war veterans settled in Ohio, so the General and his wife were honored there. Molly Stark Park is located in Nimishillen Township, Stark County, in northeastern Ohio. It is the grounds of the former Molly Stark Hospital, which served as a tuberculosissanatorium in the 1930s. It became a state hospital for the mentally ill and the aged, and closed in 1995. In 2009 the Stark County Commissioners released the grounds and former hospital to the Stark County Park District. After asbestos remediation the old hospital is to be demolished, and more hiking and bicycling trails, and picnic grounds added.

The Molly Stark cannon, or "Old Molly", bears her name, and is kept by the New Boston Artillery Company in New Boston, New Hampshire.